In biology, a reaction is the response of an organism to a stimulus. In chemistry, a reaction is a process in which multiple substances are converted to different substances. What do you know about the rate of reaction?
1g of marble chips in 100cm3 of hydrochloric acid at 20°C
1g of powdered marble in 100cm3 of hydrochloric acid at 30°C.
1g of powdered marble in 100cm3 of hydrochloric acid at 20°C
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All colliding particles have the same amount of energy
Only fast-moving particles collide with each other
Reactions can happen if the colliding particles have enough energy
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Ribbon magnesium, 1 mol/dm3 of acid, 80 degrees celsius
Powdered magnesium, 0.5 mol/dm3 of acid, 20 degrees celsius
Ribbon magnesium, 0.5 mol/dm3 of acid, 80 degrees celsius
Powdered magnesium, 1 mol/dm3 of acid, 80 degrees celsius
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The catalyst has been used up
The particles have run out of energy
One or more of the reactants has been used up.
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The calcium carbonate is covered by bubbles of carbon dioxide
An insoluble layer of calcium chloride is formed
The calcium carbonate is all used up
The hydrochloric acid is all used up
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